Hello, all. I’m using iPhone 6 for about a half of a year and it ran smoothly up until I installed the iOS 10.3.3 Update. I don’t know if that’s just a coincidence, but soon after updating iMessege just stopped working. When I try to send a message, a red exclamation mark shows next to the text and “Not Delivered” notification down below it.

I’ve restarted my device and check the connection. Everything seems right. What else can I do to fix iMessage? Please help asap.

Apple’s iMessage[1] is a great way of communicating with other Apple users for free. The service is available on iPhone, iPad or iPod touch devices and the only thing users need is the Messages app. The service uses Wi-Fi or cellular-data networks and allows sending messages in three formats – iMessages, SMS or MMS.

The older iMessage service is quite primitive in comparison to the one available on iOS 10 and 11. Currently, users of Mac devices can use emoji, invisible ink, animated backgrounds, bubble effects, stickers, handwriting, digital touch,[2] and many other novel features.

Along growing complexity of iMessage, the problems regarding this service grow in parallel. Quite a lot of iPhone, iPad, and iPod users reported that iMessage stopped working after installing iOS 10 or 11[3] update. Some people get a yellow exclamation mark next to the text, the others see the text in a green bubble, and so on.

The culprit of iMessage not working may be related to the server, software or settings. The fixes differ in each case, so we’ll provide the most common problem fixes down below.

TIP: before initiating any fixes, try to restart your device and make sure that you need WiFi (3G or 4G) or a cellular data connection working properly.

1. Check the Apple’s iMessage server

To repair damaged system, you have to purchase the licensed version of Reimage Reimage.

iMessage may stop working if Apple’s iMessage server goes down.[4] It means that the service is currently unavailable for all Mac device users. The last case of Apple’s iMessage server failure has been registered in February 15, 2017.

To check the server status, you’ll have to open the System Status page, which is available on the official Apple’s website. To see the list of currently working services, click this link.

If iMessage is missing from the System Status list, it means that the iMessage server is down and the only solution is waiting.

3. Set up iMessage correctly

To repair damaged system, you have to purchase the licensed version of Reimage Reimage.

If iMessage stopped working after installation of the iOS update, it might be that the update initiated some changes in Settings. Therefore, you should check whether iMessage is turned on. For this purpose, you have to:

Go to Settings -> Messages.

iMessage should be switched on. If it’s not, then turn it on.

After that, check the address and mobile number that is indicated in Send & Receive section. If the information is not correct, change it.

IMPORTANT: if the message “Waiting for activation” or “Activation unsuccessful” shows up when you open Settings -> Message, then you’ll have to fix iMessage activation problems.

5. Sign out from iMessage

To repair damaged system, you have to purchase the licensed version of Reimage Reimage.

If none of the not working iMessage fixed provided above helped, try to sign out iMessage and then sing-in again using your Apple ID.

Navigate to Settings -> Messages -> Send & Receive.

Tap on Apple ID and then Sign Out.

At the top of the screen, you should see an option Use your Apple ID for iMessage. Tap Sign In next to it.

Now Sign In to your iMessage and try to send a message.

Hopefully, this guide was helpful for you and the iMessage problems have been eventually fixed. If you have other problems, the last thing we would recommend trying is to check for the available iOS updates.

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About the author

Linas Kiguolis
- IT professional

Linas Kiguolis is a qualified IT expert that loves sharing his excellent knowledge about problems in Windows and Mac operating systems. Linas’ insights often help other team members find quick solutions for visitors of UGetFix site.